大陸霧霾飄洋南下?台灣當局籲民眾勿開北窗
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15日大陸冷氣團南下,觸及台灣,氣溫明顯下降,在氣象預報之下,台灣民眾早有心理準備。但意外的是,15日中午,台灣環保部門發出警報,呼籲台灣民眾,下午起不要開北麵的窗,因為伴隨冷氣團南下的空氣汙染物,也從大陸飄到了台灣。
據法國國際廣播電台網站12月15日報道,台灣環保部門當天對全台灣地區發出空氣汙染警報,這是今年入冬以來,台灣受大陸汙染物影響最明顯的一次,大約下午三點多,台灣北部和東部的宜蘭地區首當其衝,空氣品質開始變差,細懸浮微粒(PM2.5)濃度升高,達到最高的紫色等級。
台環保部門強調,“上海的PM2.5濃度在15日中午就高達每立方米270微克,所以,這波髒空氣,會為台灣帶來每立方米70到100微克濃度的PM2”,和過去相比,明顯對台灣影響較大,民眾應嚴加防範。
報道稱,大陸霧霾抵台後會往中南部移動,再與中南部地區的境內汙染物混在一起,影響更大,因此預估16日全台灣空氣品質都會達到“紫爆”等級,要到16日下午四時後才有可能解除。因此環保部門警告台灣民眾,就算待在家裏,也不要打開朝北麵的窗戶,因為外麵空氣真的很髒。
據報道,所謂PM2.5是指空氣中極細小的懸浮微粒,其顆粒直徑在2.5微克以下,這種極小的懸浮微粒,被人體吸入之後,鼻毛和氣管的纖毛都擋不住,會進入肺部的最深層,和肺泡結合,有致癌風險。
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